+++ /dev/null
-.de EX \"Begin example
-.ne 5
-.if n .sp 1
-.if t .sp .5
-.nf
-.in +.5i
-..
-.de EE
-.fi
-.in -.5i
-.if n .sp 1
-.if t .sp .5
-..
-.TH Sonar 1 "12-Aug-08" "X Version 11"
-.SH NAME
-sonar - display a sonar scope
-.SH SYNOPSIS
-.B sonar
-[\-ping \fIhosts-or-subnets\fP]
-[\-ping\-timeout \fIint\fP]
-[\-delay \fIusecs\fP]
-[\-speed \fIratio\fP]
-[\-sweep-size \fIratio\fP]
-[\-font-size \fIpoints\fP]
-[\-team-a-name \fIstring\fP]
-[\-team-b-name \fIstring\fP]
-[\-team-a-count \fIint\fP]
-[\-team-b-count \fIint\fP]
-[\-no\-dns]
-[\-no\-times]
-[\-no\-wobble]
-[\-debug]
-[\-fps]
-.SH DESCRIPTION
-This draws a sonar screen that pings (get it?) the hosts on
-your local network, and plots their distance (response time) from you.
-The three rings represent ping times of approximately 2.5, 70 and 2,000
-milliseconds respectively.
-
-Alternately, it can run a simulation that doesn't involve hosts.
-.SH OPTIONS
-.I sonar
-understands the following options:
-.TP 8
-.B \-ping \fIhosts-or-subnets\fP
-The list of things to ping, separated by commas or spaces.
-Elements of this list may be:
-.RS 8
-.TP 12
-.B simulation
-Run in simulation mode instead of pinging real hosts.
-.TP 12
-.I hostname
-Ping the given host.
-.TP 12
-.I A.B.C.D
-Ping the given IPv4 address.
-.TP 12
-.B subnet
-Ping the local subnet. On systems where we can determine the local
-network mask, we use that; otherwise, we assume Class C (254 hosts).
-.TP 12
-.B subnet/\fINN\fP
-Ping a different-sized local subnet: e.g., \fBsubnet/28\fP would ping
-a 4-bit subnet (the nearest 14 addresses). On systems where we can
-determine the local network mask, we always use that.
-.TP 12
-.I A.B.C.D/NN
-Ping an arbitrary other IPv4 subnet. The address specifies
-the base address, and the part after the slash is how wide the
-subnet is. Typical values are /24 (for 254 addresses) and /28 (for
-14 addresses).
-.TP 12
-.I filename
-Ping the hosts listed in the given file. This file can be in the
-format used by \fI/etc/hosts\fP, or it can be any file that has host
-names as the first or second element on each line. If you use ssh,
-try this:
-
- sonar -ping $HOME/.ssh/known_hosts
-.RE
-.TP 8
-.B \-ping\-timeout \fIint\fP
-The amount of time in milliseconds the program will wait for an answer
-to a ping.
-.TP 8
-.B \-delay \fIint\fP
-Delay between frames, in microseconds. Default 20000.
-.TP 8
-.B \-speed \fIratio\fP
-Less than 1 for slower, greater than 1 for faster. Default 1.
-.TP 8
-.B \-sweep-size \fIratio\fP
-How big the glowing sweep area should be. Default 0.3.
-.TP 8
-.B \-font-size \fIpoints\fP
-How large the text should be. Default 10 points.
-.TP 8
-.B \-no\-wobble
-Keep the display stationary instead of very slowly wobbling back and forth.
-.TP 8
-.B \-no\-dns
-Do not attempt to resolve IP addresses to hostnames.
-.TP 8
-.B \-no\-times
-Do not display ping times beneath the host names.
-.TP 8
-.B \-team-a-name \fIstring\fP
-In simulation mode, the name of team A.
-.TP 8
-.B \-team-b-name \fIstring\fP
-In simulation mode, the name of team B.
-.TP 8
-.B \-team-a-count \fIint\fP
-In simulation mode, the number of bogies on team A.
-.TP 8
-.B \-team-b-count \fIint\fP
-In simulation mode, the number of bogies on team B.
-.TP 8
-.B \-fps
-Display the current frame rate, polygon count, and CPU load.
-.SH NOTES
-On most Unix systems, this program must be installed as setuid root
-in order to ping hosts. This is because root privileges are needed
-to create an ICMP RAW socket. Privileges are disavowed shortly after
-startup (just after connecting to the X server) so this is believed
-to be safe:
-.EX
-chown root:root sonar
-chmod u+s sonar
-.EE
-It is not necessary to make it setuid on MacOS systems, because on
-MacOS, unprivileged programs can ping by using ICMP DGRAM sockets
-instead of ICMP RAW.
-
-In ping-mode, the display is a logarithmic scale, calibrated so that the
-three rings represent ping times of approximately 2.5, 70 and 2,000
-milliseconds respectively.
-
-This means that if any the hosts you are pinging take longer than 2
-seconds to respond, they won't show up; and if you are pinging several
-hosts with very fast response times, they will all appear close to the
-center of the screen (making their names hard to read.)
-.SH BUGS
-Does not support IPv6.
-.SH SEE ALSO
-.BR X (1),
-.BR xscreensaver (1),
-.BR ping (8),
-.BR ping6 (8)
-.SH COPYRIGHT
-Copyright \(co 2000-2012 by Jamie Zawinski <jwz@jwz.org>
-.RE
-Copyright \(co 1998 by Stephen Martin. <smartin@canada.com>
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation. No representations are made about the suitability of this
-software for any purpose. It is provided "as is" without express or
-implied warranty.
-
-.SH AUTHORS
-Stephen Martin <smartin@canada.com>, 3-nov-1998.
-
-Subnet support, etc. added by Jamie Zawinski, 17-Jul-2000.
-
-Rewritten using OpenGL instead of X11 by Jamie Zawinski, 12-Aug-2008.
projects / xscreensaver / blobdiff